Attributable Risk refers to the portion of disease incidence in a population that can be linked to a specific risk factor. It helps quantify the impact of that risk factor on public health. For example, if smoking is identified as a risk factor for lung cancer, the attributable risk would measure how many lung cancer cases can be attributed to smoking. Calculating attributable risk involves comparing the incidence of a disease in an exposed group to that in a non-exposed group. This information is crucial for public health officials and researchers to prioritize interventions and allocate resources effectively.